Baking-oven.



W. FISCH.-

BAKING OVEN..

APPLICATIQN FILED MAYZI. |914.

Patented Jan. 22, 1918.

6 SHEETS-SHEET I.

aluminum W. FISCH.

BAKING OVEN.

. APPLICATION FILED MAY 21. 1914. Imm. Patented Jan. 22, 1918.

6 SHEETS-SHEET 2. E@ Z 27@ www I W. FISCH.

BAKING OVYEN. APPLICATION FILED MAI/21. I9I4.

I MII Patented Jan. 22, 1918.

6 SHEETS-SHEET 3.

Z6 @weones W FISCH.

'BAKING OVEN.

APPLlcATloN FILED Patented Jan., 22, 19M

6 SHEETS-SHEET 4.

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W.FCW

BAKING OVEN.

APPucAnoN ruin MAY21.191

Patented Jan. 22, 1918.

6 SHEETS-SHEET 5.

W HSCH.

BAKING OVEN.

APPLICATION FILED mAY21.1914.

Patented Jan. 22, M8.

6 SHEETS-SHEET 6.

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@ldlldlltllllio Application itllcd May 2l, 19M.

To al? whom/.fit may concern:

Be it known that ll lVILLrAM Frscrr, a citi` nen ol the United tates, residing at Bir mingham, in the county of d'ederson and State ot Alabammhave invented certain new and useful improvements in Baking-Ovens; and l do hereby declare the following to lbe alull, clear, and exact description ot the invention, such as Will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to ovens and especially to ovens tor baking breads, cakes, pies and crackers.

lts object is to provide a sectional oven with a series of shelves or trays continuously traveling through the various sections of the oven so that the trays may he readily charged and discharged and a large amount ot bread be uniformly baked. l have provided for maintaining an4 even and appropriate baking temperature at every stage of the progress and for cooling or moistening the air titl in any section when desiredand torso presenting the bread to the heat as to secure as good results on a large scale with my oven as can he had on a small scale with the ordinary ovens. ll am also enabled Without especially dividing the oven into separate sections, -to maintain, if necessary, diderent temperatures in didere'nt sections.l

'lo this end my invention comprises the combinations of mechanism set forth in the appended claims.A

ln the drawings Figure l is al front elevation of my improved oven with the. interior construction illustrated.Y in dotted lines;

lig. 2 is afcentral vertical longitudinal section of approximately one haltet the oven illustrated in Fig. l;

Fig. is a vertical transverse sectional view on the staggered line 3--3 of Fig. 2 with part broken away to show the relative location of the furnace;-

3 Fig. d is a vertical section on the line 3id of Fig. 3;

Fig. 5 is a vertical section on the line 5 5 of Fig. 3;

Fig. 6 is a combined partial section and front elevation to show the location ot the proof room; and

rpeeilleation et Letters 'Patenti i Patented T'an. @29, Serial No. www.

oven is huilt up a pyramidal structure 5 and a corresponding heat storing triangular structure 6. 'lhe triangular structures Agive the edect of depending from the upper part of the oven chamber Iand are put back to back in the respective sections ot the oven with intervening Walls 7.

These are, therefore, a serieso:I pyramidalheating structures and a series ot inverted radiating structures, taking the oven as a whole, and between these are 1ncl1ned Ways 8 'which meet at the top and which are joined at the bottom by intervening horizontal Ways or chambers 9. There are also at opposite endsot the oven vertical Ways l0 and ll, and extending across thevoven the top, a horizontalivay l2.

rlhrough these Ways or channels travel a the exterior` titl liti

series of trays 13, each swung trom diverf gent arms la pivoted to rods or shatts l5, each rod or shaft being carried by an endless sprocket chain 16 traveling over the sprocket Wheels i7, the sprocket wheels being driven by suitable power from any preterred source.

lln'the drawings, by reference to lFig. 2, it will be seen that there is' illustrated in the upper lett-hand corner an adjusting means 18 for this sprecket'wheel torthe purpose of taking up the slack. 'llhis 'means consists of an ordinary channel box 19 and adjusting Arod 20. Any one oit various common adjusting means may be vemployed tor' this purose,the one shown being a simple and teasivble device. llt will be observedthat the upper corner ot the triangular structure 6 is cut away as at 2l for the purpose otA permitting a sidewisemovement or adjustment, ill necessary, .of the.- sprocket Wheel just described. An adjustment device may be ap-Y Sli titl' of trays through a series of sections of the oven, any section of which, as will beseen may have its heat separately regulated, an

i. provide also for a long', continuous travel through a substantially uniform temperature and under uniform conditions as the bread passes, for example, up the channel 11, across the channel 12 and down the channel 10.

22 represents a plurality of furnaces.v In this instance there are twoillustrated but it is obvious that any number of these furnaces may be provided and a corresponding number of pyramidal sections 5 and 61ocated above them for the purpose of increasing the size and capacity of the ovens. The furnaces 22 are provided with doors 23 'and grates`24.I

Located on each side of each furnace 22 is a horizontal flue 25 which communicates with the furnace at its rear end by means of a lateral passage 26. In the figures of the drawing a furnace and an oven are shown in substantially central section in Fig. 2. In Fig. 3 the oven and furnace are shown on the line 3--3 running through Fig. 2. In Figs. 4 and 5 there are shown respec- .tive1y sections on lines4-4 and 5-5 'of Fig.

3, that is, Fig. 4 is a central vertical section through the front wall, while Fig. 5 is through the rear wall.

I pro ose to have the direct products of n combustion go back to the rear first, then rethe furnaces 22,' and by means of a short' nace.

turn front, ythen again to the rear, and finally discharge through the chimney governed by dampers. The lateral passage 26 communicates with a rear chamber 220: of the fur- At the forward end of the passage 2,5 is an upwardly extending passage 27 which communicates with a series of horizontal pipe lines 28. That is to say, the products of combustion so far will come from the rear through'the passagev25., up the passage 27 into the pipe ues 28, as indicated by the arrows, flowing through them again to the rear where through a passage l29 they communicate with a `set of pipe fines 290. These fiues bring the products of combustion forward again and discharge them into the flue 31 which communlcates 'with the chimney controlled by the damper 30. The ends of the pipe flues 290 are shown as leading into the bottom of theue 31 and are also shown in an angular relation. Thisarrangement enables me to get a larger number of pipes discharging at substantially the same point in the flue.

The chamber 220 is in direct communication with horizontal flues 32 located above vertical passage 33, the 'said flue- 32 communicates with a plurality ofsuperimposed horizontal. Hues 34. These flues 32, 33 and 34 are located within a.pyramidal member 5, that member being com osed of honeycombed brickwork 35 in w ich the heat of radiation from the furnaces and the fines 32, .33, 34 is stored u land permitted to pass into vthe baking c amber through the mediumof pivoted dempers 36. These dampers are provided with ivotal members in the shape of rods 37 whlch extend through the `front wall ofthe oven and are provided with operating 4handles 38 held in adjusted position by toothed segments 39. The honeycombed bri ck-work of the pyramidal members 5 is entirely inclosed within an insulated'casing 40 which effectually prevents the escape of the heat into the baking chamber except -throughthe-medium of the dempers 36 so that the amount of heat thus admitted may be readily controlled.

Located at the apex of` the inclined ways 8 is a damper '4l which controls` a series of passages 42 leading, into the passage 12. A similar damper 43 is located on each side of the oven, 4at the lower end of the pyramidal section 5 which controls the escape ofy heat through the passage 44 into tion 9 of the baking chamber.

Heat within thepassage 12 is also controlled through the flue` 45 which is reguthe porlated by the damper 46. 'At the rear of thev oven there isa vertical flue 47 which communicates with a common horizontal flue 48 which acts to carry off the waste heat and products of combustion. y

' It will /be understood from the preceding description that the chamber 220 at the rear of the furnaces feeds directly to passages 32the roducts of combustion. That is,

the pro ucts'of combustion come-from the j rear of the furnace through the iues 32 to that there is provided for this-purpose aV worm gear 49 located upon the-outer end of the shaft 50 which carries one of the sprocket wheels 17. This worm gear 49 engages the worm 51 mounted on the shaft'52 carried in bearings 53rup'on the front wall of the oven. said shaft being driven over a pul- In order tol prevent the chain 16 from saggin and possibly comlnflgrl in contact with the wa ls of the passages t rough which it jaaa-asia passes, there is provided in the inclined Ways 8 a plurality of supporting rollers 55. These rollers are carried by brackets 56 suspended from the -Walls of the inverted pyramidal members 6. Similar rollers 57 carried by brackets 58 are suspended from the top'Wall of the passage 12.

Suitable manholes 59 are provided inthe front wall of the furnaces so that ready tal chamber provided with a series of parover 100 Fahrenheit.

titionsgl arranged in staggered relation. These partitions` abut or Aadjoin the lower and upper Walls of the proof room and are so arranged thatthe passages 62 formed thereby are in communication with one another owing to the fact that the end of the partition opposite that which adjoins the Wall of the proof room,stops before reaching the opposite Wall. Located at the point of communication of the passages 62 is a sprocket 63 over which the chain 16 of the baking chamber is adapted to pass. This chain 16 is identical with the one previously" described and carries the usual pivoted shelves 13.

It is necessary to etfectually insulate the proof room from the baking chamber, and

in order to do this a heavily insulated vvally 66 is provided therebetween so that the heat will be prevented from coming through this partition.

The oven Will usuallycarry a temperature of from 40 to 600O Fahrenheit While the temperature ofthe proof room will never' go The proof room is supplied with an independent heating system and the temperature automatically maintained ata uniform degree.

Worm Wheels 66 and Worm gears 67 similar to the wheels 50 and gears 51 are used to aid in driving the sprocket Wheel 63. Manholes 67 are also provided to permit access to the proof room. l

In Fig. 7 I have shown a part of the proof room and a unit of the furnace and oven in relation and at the side a cooling device by which, When desired, the chains 16' and shelves 13 may be cooled before the-articles to be proofed and baked are placedupon them. To this end I provide a shaft 70 in one side of the structure. With the shaft 7 0 communicates the branches ofV an in-feed air pipe 71 supplied by a blower 7 2. I have also provided. a series of moistening pipes 80 which I may-place throughout the apparatus supplied with steam from any suitable source and may be regulated in any appropriate manner by a valve or cock.

I claim l. In a baking oven, the combination with an endless carrier and a series of pivoted trays or shelves borne by the carrier, of a series of sections each comprising a furnace, opposing heat-storing structures, intervening hot-air passages, in which the carrier is adapted to i travel and valved openings through the Walls of the heat-storing structures leading into the passages.

y2. In a baking oven, comprising a series of sections, the-combination of a furnace, a heat-storing structure` receiving .heat from lthe furnace, non-conducting Walls on the sides 'of the heat-storing structure, valved openings through the Walls, and means for carrying the material to be baked through the sections of the oven.

3. In a baking oven, the combination of a furnace, a superimposed `honey-combed heatstoring structure, a -second heat-storing structure, intervening passages, heating flues' leading from the furnace to the second heatstoring structure, andmeans for governing the discharge of heat from the first named heat-storing structures into the passages. 4. In a baking oven, the combination with an endless carrier, of a series of communieating sections with means for independently heating each lsection to a desired temperature While at the same time maintaining communication between the sections, the series of communicating sections comprising upright side passages connected overhead by a horizontal passage.

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5. In a baking oven comprising a series and distributing structures arranged to formA y passages in each section.

6. In abaking oven, the combination of a series of pyramidal heat-storing structures, vertical passages at each end of the oven, a communicating horizontal passage at the top, and means for carrying' articles about the heat-storingstructures and through the passages.

7. In a baking oven, the combination of a baking section, a proof room adjoining the baking section, an intermediate cooling shaft and means for 'carrying articles travelin and the proof room. l

8. -`In a baking oven, theccombination with passages for the articles,fof a pyramidal section having insulatedfwalls and aninclosed heat-storing structure having valves in the Walls.

"In a' baking-oven, the combination of afpassage formed of a series of communicat- Athrough the baking section, the cooling sha t ing passages, a heat storing chamber ben testimony whereof Ihave hereunto tween adjacent sections of the passage, upsigned my name in the presence of two sub- 1o' right and loverhead passages surrounding the soribng witnesses.

heat stornv' chamber means for controlling 5 the deliverpf heat afrom each heat storing MLLAM FSCH' chamber to 1ts adjacent section of the pas- Witnesses: sage and means for regulating the tempera- FANCHON ARMSTRONG,

ture in each passage. W. C. HAMILTON. 

